The only big reason I feel that makes Pangaea easy is because it's smaller than most scripts of the same size. But outside of that I think most reasons favor Pangaea being more difficult. Sharing an island with only 1 or 2 AIs makes it much easier to conquer, and that it's hard to imagine losing once you have an entire island under your control. And being separated by water will always seriously impede an AI's ability to fight a war. It's true that for all you know one continent could have a runaway, and it's also true that the other continent could be a bunch of backwards people in a stalemate war for millenia. I think that's the biggest thing Pangaea has going for it -- the results are more balanced and can be influenced by the player, vs random dice rolls the AI have made against each other thousands of years before you met them. And ofc you can't start isolated, which most find boring and gameruining. Still it's very hard to imagine losing a map with a lot of water, as the AI can build all sorts of things and you can level the entire civilization with transports, subs and nukes on the first turn of a war. Pangaea it's more likely the AI will have much of its civ not vulnerable to turn 1 nuke invasions.